C++ :: How To Access Vector Of Queues In Two Functions

I have the following code which will find the minimum size queue among a vector of queues and the minimimum size queue will enqueue(push) the int

std::vector<std::queue<int> > q
void enqueue(){
int min_index = 1;
std::size_t size = q.size();
for( i=2; i<size; i++) //accessing loop of queues
if(q[min_index].size() > q[i].size())
min_index = i; // Now q[min_index] is the shortest queue
q[min_index].push(int)
}

Now my another paradigm is to do the dequeue(pop) operation in another function(shown below), bt i need to access all vector of queues declared in enqueue() function. how can i access the loop of queues given in the enqueue() function?

void dequeue(){
//q.pop operation , access all the queues in the loop of queues
}
willq[i].pop(int);

Access all the queues in the enqueue function and does the pop operation?